[Bug dynamic-link/16046] dl_iterate_phdr should not expose internal stub

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http://sourceware.org/bugzilla/show_bug.cgi?id=16046

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d23a5c1b1908700d25b7e3c6cece148e19dded4

commit 0d23a5c1b1908700d25b7e3c6cece148e19dded4
Author: Maciej W. Rozycki <macro@codesourcery.com>
Date:   Fri Jan 31 17:51:31 2014 +0000

    [BZ #16046] Static dlopen correction fallout fixes.

    Fixes to address issues from BZ #15022 resolution, as follows:

    * TLS updates to csu/libc-tls.c -- we now have a proper main map, so
      there's no longer a need to create a separate fake one to keep TLS
      structures,

    * random updates to elf/dl-close.c -- LM_ID_BASE is now a valid name
      space ID for static executables as well, so assert that we don't
      unload the main map.  Similarly dl_nns isn't supposed to be 0 for
      static executables anymore,

    * actual BZ #16046 fix to elf/dl-iteratephdr.c -- the dl_iterate_phdr
      special function for static executables isn't needed anymore, provided
      that l_phdr and l_phnum members of the main map have been properly
      initialized (done in _dl_non_dynamic_init in elf/dl-support.c now),

    * ld.so.cache loader update to elf/dl-load.c --
      GL(dl_ns)[LM_ID_BASE]._ns_loaded is now always initialized in static
      executables so can become the fallback loader map to check for
      DF_1_NODEFLIB, provided that the l_flags_1 member of the main map has
      been properly initialized (done in elf/dl-support.c now); this also
      ensures previous semantics elsewhere in elf/dl-load.c,

    * matching updates to elf/dl-support.c -- to complement the two fixes
      above.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog            |   16 ++++++++++++++++
 NEWS                 |   14 +++++++-------
 csu/libc-tls.c       |   27 ++++++++++++---------------
 elf/dl-close.c       |   10 +---------
 elf/dl-iteratephdr.c |   30 ------------------------------
 elf/dl-load.c        |   14 ++++----------
 elf/dl-support.c     |    3 +++
 7 files changed, 43 insertions(+), 71 deletions(-)

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